Analysis of organic foulants in the coagulation-microfiltration process for the treatment of Taihu Lake
Analysis of organic foulants in the coagulation-microfiltration process for the treatment of Taihu Lake
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太湖混凝微滤工艺中有机污染物分析
DOI：
10.1080/09593330.2018.1473501
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发表时间：
2019-11-10
影响因子：
2.8
通讯作者：
Tan, Kaiting
中科院分区：
文献类型：
--
作者：
Dong, Bingzhi;Gui, Bo;Tan, Kaiting
对太湖混凝-微滤工艺中的有机污染物进行了分析。采用高效体积排阻色谱(HPSEC)和荧光激发发射矩阵(EEM)研究了有机物特性对微滤膜污染的影响。结果表明，混凝预处理能有效去除大分子物质和部分小分子有机物，从而延长膜生物滤池的运行时间。对污垢的分析表明，强疏水性酸(SHA)和中性亲水性(Neut)组分的有机物(以疏水性为基础)和中、小分子量组分(以相对分子质量分布为基础)对不可逆污染有很大贡献。化学溶液的EEM荧光分析表明，芳香蛋白和可溶性微生物产物主要是对不可逆污染的反应。
This paper analysed organic foulants in the coagulation-microfiltration process for Taihu Lake treatment. High-performance size-exclusion chromatography (HPSEC) and fluorescence excitation?emission matrices (EEM) were applied to elucidate the influence of characteristics of organics on microfiltration (MF) membrane fouling. Results showed that coagulation pretreatment could extend the operation duration of MF based on the fact that pretreatment could effectively remove macromolecular substances as well as a portion of small molecular weight (MW) organics. The analysis of foulants indicated that organics of strong hydrophobic acids (SHA) and neutral hydrophilic (Neut) fractions (based on hydrophobicity) and medium and small MW components (based on MW distribution) contributed greatly to irreversible fouling. EEM fluorescence analysis of chemical solutions exhibited that aromatic proteins and soluble microbial products were mainly a response to irreversible fouling.